By the early 1970s there were Portuguese industrialists envisioning the eventual transfer of industrial concerns such as textiles to Portuguese Africa. During the last days of colonialism (1961-1974), the industries in Angola and Mozambique grew rapidly, as the Portuguese government liberalised the economy and sought international capital into Angola and Mozambique so that the territories would develop more rapidly and western multinationals would have a stake in wanting to preserve the status quo. I was able to find some footage from the early 1970s showing the industries.
Below at 1:40 you can see the textile industry had started to grow in Vila Pery (Chimoio) in Mozambique.
https://www.youtube.com/watch?v=iFuqzi4skxo
Also, at 1:45 below you can see the industrial city of Matola outside of Maputo, it was a planned industrial city with an oil refinery, petrochemicals plants, where rubber products such as tyres were manufactured, also chemical plants, cement and construction materials, etc.
http://www.dailymotion.com/video/xgb7xd_mocambique-final-no-outro-lado-do-tempo_people
In this one you can see the the same in Malanje, Angola at 127:08 along with the mining of iron ore and metals industry in Southern Angola at 128:30 and again at 150:00. This footage was taken in 1973, so it shows the very final days of Portuguese colonialism.
https://www.youtube.com/watch?v=ODgo8jjFfNQ
Much of this nascent industrialisation was based on the transformation of local raw materials, and the other industries were to satisfy the local and growing consumer population of settlers. The latter included the manufacturing of beer and soft drinks, soaps and detergents, vegetable oils, cigarettes, paper, refined petroleum etc. Angola had the largest industrial boom and by 1973 industry accounted for 41% of its GDP. The largest sector was food packaging/processing (36%), textiles (32%), beverages (11%), chemicals and non-ferrous metals (5%), petrochemicals (4%), and finally paper and pulp (3%).
By world standards, it was still small, but Mozambique's industrial output employed 100,000 people in 1973, however it accounted for 16% of the GDP. Also, more than half of the industrial activity was located in and around the capital of Lourenço Marques. In Angola, Luanda dominated too, but accounted for around 38% of industrial activity as it was more spread out in different cities around the colony.
Below is the Per Capita GDP of Angola, Mozambique, Portugal and compared with some other countries with figures in 1990 International Dollars, these figures come from Angus Maddison's "The World Economy: Historical Statistics".
GDP per Capita 1990
USA $23,201
Portugal $10,826
Brazil $4,920
South Africa (including Independent Homelands) $3,834
Morocco $2,591
Egypt $2,523
Indonesia $2,514
China $1,871
Zimbabwe $1,355
India $1,309
Mozambique $1,114
Nigeria $1,112
Ghana $1,062
Angola $820
Zambia $806
GDP per Capita 1973
United States $16,689
Metropolitan Portugal $7,063
South Africa $4,175
Brazil $3,880
Mozambique $1,873
Angola $1,789
Morocco $1,694
Indonesia $1,490
Rhodesia $1,432
Ghana $1,397
Egypt $1,294
Nigeria $1,262
Zambia $1,062
India $853
China $838
GDP per Capita 1960
United States $11,328
South Africa $3,041
Metropolitan Portugal $2,956
Brazil $2,335
Ghana $1,378
Morocco $1,329
Mozambique $1,327
Angola $1,253
Indonesia $1,012
United Arab Republic (Egypt) $991
Northern Rhodesia $960
Southern Rhodesia $938
Nigeria $820
India $753
China $662